用示波器测的ARM向字库芯片发送数据时SCLOCK和MOSI信号正确,但是接收时SCLOCK和MISO没信号,请问是什么问题?
GPIO_Config(GPIO0, 0x0077, GPIO_AF_PP); //Configure GPI00 on mode Alternate function Push Pull
GPIO_Config(GPIO2, 0x8000,GPIO_OUT_PP);
GPIO_BitWrite(GPIO2, 15,1);
BSPI_BSPI0Conf(ENABLE); //Enable the BSPI0 interface
//-------------------------------------------
//Configure BSPI0 as a Master
//-------------------------------------------
BSPI_Init(BSPI0); //Initialize BSPI0
BSPI_ClockDividerConfig(BSPI0, 6); //Configure Baud rate Frequency: ---> APB1/6
BSPI_Enable(BSPI0, ENABLE); //Enable BSPI0
BSPI_MasterEnable(BSPI0, ENABLE); //Configure BSPI0 as a Master
BSPI_ClkActiveHigh(BSPI0, ENABLE); //Configure the clock to be active high
BSPI_ClkFEdge(BSPI0, DISABLE); //Enable capturing the first Data sample on the first edge of SCK
BSPI_8bLEn(BSPI0, ENABLE); //Set the word length to 16 bit
BSPI_TrFifoDepth(BSPI0, 7); //Configure the depth of transmit to 7 words
pTxBuffer = bArray; //Point on the word to transit
//-------------------------------------------
//Configue BSPI1 as a Slave
//-------------------------------------------
BSPI_Init(BSPI1); //Initialize BSPI1
BSPI_ClockDividerConfig(BSPI1, 8); //Configure Baud rate Frequency :-->APB1/8
BSPI_Enable(BSPI1, ENABLE); //Enable BSPI1
BSPI_MasterEnable(BSPI1, DISABLE); //Configure BSPI0 as a Slave
BSPI_ClkActiveHigh(BSPI1, ENABLE); //Configure the clock to be active high
BSPI_ClkFEdge(BSPI1, DISABLE); //Enable capturing the first Data sample on the first edge of SCK
BSPI_8bLEn(BSPI1, ENABLE); //Set the word length to 16 bit
BSPI_RcFifoDepth(BSPI1, 5); //Configure the depth of receive to 5 word
//---------------------------------------------
//Send five words of buffer ---> BSPI0
//---------------------------------------------
get_zm();
//BSPI_BufferSend(BSPI0, pTxBuffer, 5);
while(1)
{ GPIO_BitWrite(GPIO2, 15,0);
BSPI_BufferSend(BSPI0,ZiKu_Command, 5); //5
//BSPI_MasterEnable(BSPI0, DISABLE);
BSPI_BufferReceive(BSPI0, pRxBuffer, 8); //8
GPIO_BitWrite(GPIO2, 15,1);
//BSPI_MasterEnable(BSPI0, ENABLE);
for(k=0;k<8000;k++);
// for(i=0;i<8;i++)
// test=*pRxBuffer++;
} |
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